I believe it is 4.5mph because traveling upstream and the stream moves at a speed of 4mph would knock off 4 of the original number so if you add 4miles to the given 5 miles you get 9
The same is with the boat going downstream it is adding 4 miles to the original number so you subtract 13 and 4 and you get 9
If it took 2 hours to do that then you divide 9 by 2 and get 4.5
Answer:
Z-score is 1.75
Step-by-step explanation:
You can find the Z-score from the standard normal table. Just read the table in reverse.
In this case, Z = 1.75
Answer:
Step-by-step explanation:
Answer:
yes it is not b/c
Step-by-step explanation:
if n is >5 ,5 is < n
Answer:
x = 1
Step-by-step explanation:
Step 1: Write equation
9 - 2x = 7x
Step 2: Solve for <em>x</em>
<u>Add 2x on both sides:</u> 9 = 9x
<u>Divide both sides by 9:</u> x = 1
Step 3: Check
<em>Plug in x to verify it's a solution.</em>
9 - 2(1) = 7(1)
9 - 2 = 7
7 = 7
